Ethylene glycol is an important organic chemical raw material with a wide range of applications across multiple industrial and daily life sectors. Its main uses include:

I. Polyester Product Production (Dominant Use)

Ethylene glycol is a key raw material in the production of polyester fibers (polyester), polyester films, and polyester plastics (such as PET mineral water bottles). Polyester fibers account for approximately 90% of global ethylene glycol consumption and are widely used in textiles, apparel, home textiles, and industrial materials.

II. Antifreeze and Coolant

As the main component of automotive engine coolant, ethylene glycol significantly lowers the freezing point of water (at concentrations below 60%), preventing freezing at low temperatures. It is also used as a coolant and condensate in industrial cold energy transfer systems.

III. Chemical Intermediates and Solvents

1. Solvents and Diluents: Used as a high-grade organic solvent in paints, inks, industrial cleaners, printing, and dyeing;
2. Chemical Synthesis: Production of surfactants, plasticizers, lubricants, pesticides, and pharmaceutical intermediates;
3. Resin Manufacturing: Used in the production of alkyd resins, unsaturated polyester resins, and polyurethanes.

IV. Daily Chemicals and Pharmaceutical Fields

1. Humectant: Absorbs moisture in cosmetics (moisturizing creams, lotions) to keep skin hydrated;
2. Pharmaceutical Applications: Used as a solvent, stabilizer, or carrier in medications (e.g., injections) and for auxiliary treatments to reduce body temperature;
3. Antifreeze Protection: Prevents freezing in medical equipment and provides low-temperature protection during surgeries.

V. Other Specialized Uses

• Electronics Industry: Electrolyte for electrolytic capacitors;
• Tobacco and Food: Humectant for flavors and sweeteners (requires strict dosage control);
• Aviation and Energy: Fuel additives and oilfield desulfurization agents.